Fukushima Unit 2; 5th Floor Work Progresses.. Sort of.

TEPCO released some images and information about the work progress on the 5th floor refueling floor of unit 2. This is where the Warrior robot became stranded and had to be abandoned after they were unable to restart it.

They have managed to cut down one of the reactor well fences using the Warrior robot. The second fence further across the refueling floor is where Warrior failed. It appears to have hung itself up while cutting loose the reactor well fence on the far side. This caused TEPCO to change the concrete sampling locations for the MEISTeR robot. It took samples near the blow out panel door and on the concrete reactor cover. Those have been extracted and taken for testing.

U2_concretesampling_reactorcover Concrete sampling inside unit 2 on the refueling floor
U2_openfence Cut away reactor well fence panel

u2_robot_lab1 Lab photo of practice work by Warrior robot to cut a reactor well fence panel.

u2_robot_lab2 The cut made with the Warrior robot to remove the fence panels
u2_robot_lab3 Dropped reactor well fence panel in the practice lab.  U2_warriorfail The Warrior robot as it sits stranded on the unit 2 refueling floor. After the battery discharged workers are unable to restart it even after recharging it. The “on” switch can only be manually activated on the robot itself. Since the radiation levels on the refueling floor are so high workers can not go in to restart it.

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